afs: Delete unneeded duplicate code

Delete a memory release and a goto since natural code flow will
result in exactly the same thing.

Change-Id: I8fe1400aa2db0e15cbbd577ba18cc1fcdec18447
Reviewed-on: http://gerrit.openafs.org/11179
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: D Brashear <shadow@your-file-system.com>